Registration Dossier
Registration Dossier
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EC number: 246-278-9 | CAS number: 24468-13-1
Endpoint summary
Administrative data
Description of key information
Additional information
Stability
In air, 2-ethylhexyl chloroformate is expected to be photodegraded by OH-radicals with a half-life of 1.5 d (EPISuite, AOPWIN v1.92, BASF SE, 2021). This estimation refers to dry air. In mist, rain, droplets and aerosols hydrolysis will be the major fate process in air due to the short half-life in aqueous solutions.
Hydrolysis product 2-ethylhexanol (CAS 104-76-7): A half-life of 1.2 d was calculated for the degradation in the atmosphere by OH-radicals (EPISuite, AOPWIN v1.92, BASF SE, 2021).
The parent compound 2-ethylhexyl chloroformate hydrolyses fast (DT50 = 30.2 min at pH 7 and 25°C) (OECD TG 111; SafePharm, 2003).
Biodegradation
The hydrolysis product 2-ethylhexanol (CAS 104-76-7) is readily biodegradable (BASF, 1989; report No. 88/0537; NITE, 2008). Regarding the hydrolysis products HCl and CO2, biodegradation is not applicable due to the inorganic character of these molecules.
Bioaccumulation
Since 2-ethylhexyl chloroformate rapidly hydrolyses in water, the assessment of bioaccumulation potential is based solely on the data available for 2-ethylhexanol (CAS 104-76-7).
Based on the available measured and calculated data on the log Kow of 2-ethylhexanol (log Kow = 2.97, BASF AG, 1987, 124659/02) and supported by results of a QSAR estimation model (OASIS Catalogic, BCF baseline model v.04.11), significant accumulation of 2-ethylhexanol in organisms is not to be expected (BASF SE, 2021).
Transport and distribution
The estimated log Koc values of the hydrolysis product 2-ethylhexanol (CAS 104-76-7) indicate that adsorption to soils or sediments is not expected (EPISuite, KOCWIN v2.00, BASF SE, 2021).
The Henry's Law Constant (HLC) of 1.54 Pa m³/mol at 25 °C for 2-ethylhexanol indicates low evaporation potential (EPISuite, HENRYWIN v3.20, BASF SE, 2021).
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